Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. When researchers ...

Hummingbirds, native to North and South America, are among the smallest and most agile birds in the world. Often barely larger than a thumb, they are the only bird species that can fly not only ...

Hummingbirds have the fastest metabolism of any animal. The tropical hummingbirds that live in the Andes Mountains in South America must expend considerable energy to maintain their high body ...

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...

billy barr tells us the lilies emergence is out of sync with the hummingbirds arrival. billy barr looks through the logs he's been keeping for almost 50 years. He explains how the glacier lilies ...

Your backyard bird feeder could be changing the birds that use it. A former UC Berkeley grad student, Nicolas M. Alexandre, along with a team of other researchers, published a study last week in ...

The hummingbird study that Tom Smith and Chris Schneider are conducting in Ecuador is part of a much larger research program spanning three continents. Evolutionary biologists are fanning out and ...

Hummingbirds use the hibernation-like state of torpor in varying ways, depending on their physical condition and what is happening in their environment, according to new research. Hummingbirds have ...